CVE-2026-86492High· 8.5▾ TwilightIn JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft of GitHub App installation tokens
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 46.8 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.6%
In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft of GitHub App installation tokens
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-86496Medium· 4.3In JetBrains YouTrack before 2026.2.18769 missing access control on Helpdesk authorized reporters exposed reporter email addresses
CVE-2026-86497Medium· 6.8In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without re-authentication allowed a project administrator to exfiltrate stored mailbox credentials
CVE-2026-86498High· 7.7In JetBrains YouTrack before 2025.3.160480, 2026.1.14047 pUT requests on link sub-resources allowed modification linked entities without update permission
CVE-2026-86499Medium· 4.3In JetBrains YouTrack before 2026.1.14047 predefined search fields leaked all group names to any user, regardless of visibility permission
CVE-2026-86500Medium· 5.5In JetBrains YouTrack before 2026.1.14047 a missing escalation check let a user with project update permissions grant themselves Project Admin
CVE-2026-86478Critical· 9.8In JetBrains YouTrack before 2025.3.161254, 2026.1.14042 improper authentication in YouTrack Helpdesk allowed unauthenticated account takeover via a self-asserted email address